Dosage calculations worksheet with answers

Free printable Dosage calculations worksheet: 6 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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Name: ____________________   Date: ____________

1.Easy
? × 250 mg

A patient is prescribed 375 mg of a drug. The tablets on the ward contain 250 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

375 mg250 mg/tablet
n = tablets
2.Easy
0123455 mL

The prescription is 9 mg. The stock solution contains 10 mg in 1 mL. Draw up the dose in the syringe: what volume V do you give?

9 mg10 mg/1 mL
V = mL
3.Medium
1:10 000ampouleV = ? mL

A prefilled syringe of epinephrine (adrenaline) is labelled 1:10 000 (0.1 mg/mL). The prescription is 1 mg IV in cardiac arrest. What volume V do you give?

1:10 0001 mg
V = mL
4.Medium
76 kgBSA = 1.72 m²250 mg/m²D = ? mg

A patient weighing 76 kg has a body surface area of 1.72 m². The prescription is 250 mg/m². Find the dose D in mg.

76 kgBSA = 1.72 m²250 mg/m²
D = mg
5.Hard
100 mg/1 mLV = ? mL

A patient weighs 85.8 lb. The prescription is 5 mg/kg as a single dose, and the stock contains 100 mg in 1 mL. Using 1 kg = 2.2 lb, what volume V do you give? Round to one decimal place.

85.8 lb5 mg/kg100 mg/1 mL1 kg = 2.2 lb
V = mL
6.Hard
40 mg/1 mLV = ? mL

A child weighing 14 kg is prescribed 20 mg/kg per dose of an oral suspension that contains 40 mg in 1 mL. What volume V do you give?

14 kg20 mg/kg40 mg/1 mL
V = mL

Answer key

  1. 1. n = 1.5 tablets
  2. 2. V = 0.9 mL
  3. 3. V = 10 mL
  4. 4. D = 430 mg
  5. 5. V = 2 mL
  6. 6. V = 7 mL

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